首页 > 代码库 > 学习W3CSCHOOL 表单验证
学习W3CSCHOOL 表单验证
1 //表单学习笔记 2 //建立一张表单的验证 3 <!DOCTYPE html> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> 7 <title>表单验证</title> 8 </head> 9 <body>10 <?php11 //创建一个检查函数12 13 14 function test_input($data){15 $data=trim($data);16 $data=stripslashes($data);17 $data=htmlspecialchars($data);18 return $data;19 }20 if(!empty($_POST[‘submit‘])){21 // 定义变量并设置为空值22 $nameErr = $emailErr = $genderErr = $websiteErr = "";23 $name = $email = $gender = $comment = $website = "";24 25 if ($_SERVER["REQUEST_METHOD"] == "POST") {26 if (empty($_POST["name"])) {27 $nameErr = "Name is required";28 } else {29 $name = test_input($_POST["name"]);30 }31 if(!preg_match("/^[a-zA-Z ]*$/", $name)){32 $nameErr="只允许字母和空格！";33 }34 35 if (empty($_POST["email"])) {36 $emailErr = "Email is required";37 } else {38 $email = test_input($_POST["email"]);39 }40 if(!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)){41 $emailErr = "无效的 email 格式！"; 42 }43 44 if (empty($_POST["website"])) {45 $website = "";46 } else {47 $website = test_input($_POST["website"]);48 }49 if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%50 =~_|]/i",$website)) {51 $websiteErr = "无效的 URL"; 52 }53 54 if (empty($_POST["comment"])) {55 $comment = "";56 } else {57 $comment = test_input($_POST["comment"]);58 }59 60 if (empty($_POST["gender"])) {61 $genderErr = "Gender is required";62 } else {63 $gender = test_input($_POST["gender"]);64 }65 }66 }67 ?>68 69 <h2>PHP表单验证</h2>70 <p style="color:#ff0000">*必填字段</p>71 <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]) ?>">72 <p>姓名：<input type="text" name="name"><span style="color:#ff0000">*</span><?php echo $nameErr?></p>73 <p>邮箱：<input type="text" name="email"><span style="color:#ff0000">*</span><?php echo $emailErr?></p>74 <p>网址：<input type="text" name="website"><?php echo $websiteErr?></p>75 <p>评论：<textarea name="comment" rows="5" cols="40"></textarea></p>76 <p>性别：<input type="radio" name="gender" value="http://www.mamicode.com/female">女性<input type="radio" name="gender" value="http://www.mamicode.com/male">男性<span style="color:#ff0000">*</span><?php echo $genderErr?></p>77 <p><input type="submit" name="submit" value="http://www.mamicode.com/提交"></p>78 </form>79 <h2>您的输入：</h2>80 81 82 </body>83 </html>
学习W3CSCHOOL 表单验证
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。